I assume the second fireing button is for shooting normal rings when you have a weapon ring, though I've yet to play a netgame on 1.09 at the moment, cecho is like Hexen's "print" command and sends a message to the middle of the screen that you could probably use in script-executing linedef execs along with a few other things to make an odd cutscene-like thing. I wonder if I could get something to execute the script so it says "GREETINGS, MORTAL" at the same time as something nearby makes the recorded voice sample of that play... It seems to be very primitive, though you can change the amount of time it displays a message as well. Is good.